Riolu could start off as a shy and scared Pokemon. But as it spends more time with Ash, it would become more confident. It might learn new moves and become more brave in battles, evolving into Lucario eventually as it gains more experience and trust in itself.
Riolu's personality could develop in a way that it becomes more confident. At first, it might be scared of battles and new situations. But as Ash encourages it and they have small victories, Riolu starts to believe in itself. For example, after winning a small battle against a weak pokemon, Riolu realizes it has the potential to be strong.
I'm not sure specifically as there could be many different 'ash's snivy evolves' fanfics. Generally, it might be about the evolution of Snivy in Ash's team. It could involve the journey leading up to the evolution, like the battles and experiences that trigger it.
In some fanfictions where Ash's Gible evolves, it might gain new and powerful moves. For example, it could learn Dragon Claw and become a more formidable opponent in battles against other trainers' Pokémon. It might also develop a closer bond with Ash as it evolves, showing more loyalty and determination to win battles for him.
The plot could start with Ash getting Riolu as his starter Pokémon instead of Pikachu. Riolu might be a bit of a troublemaker at first, not fully understanding Ash's commands. But as they journey together, they start to understand each other better.
The main characters would be Ash and Gible without a doubt. Ash as the trainer is responsible for Gible's growth and development. Gible, on the other hand, is the focus of the evolution part. However, depending on the fanfiction, other trainers that Ash competes against could also be considered main characters. They might be envious of Ash's Gible evolving or try to come up with strategies to defeat it once it has evolved.
In fanfiction, the relationship between Ash and Female Lucario can be very interesting. It often involves adventures where they work together. Their bond might be depicted as a strong friendship or something more. For example, they could be on a journey to save a particular region, and during this time, their mutual understanding and respect for each other grow.
Ash and Female Lucario in fanfiction can also represent different values. Ash might symbolize courage and determination, while Lucario could stand for loyalty and power. Their combination in the story can convey important messages about friendship and cooperation.
One idea could be that Ash has a strange encounter in a mysterious forest. There, he finds a Riolu in distress. As he tries to help the Riolu, a strange energy transfer occurs, and he starts to take on some of Riolu's characteristics. He might gain Riolu's heightened senses, like its ability to sense auras more acutely. This could lead to new adventures as he has to adapt to these changes while still trying to pursue his Pokémon journey goals.
In this kind of 'ash and riolu betrayed fanfic', it might be that Ash and Riolu are in a Pokémon tournament. They meet a new trainer who seems friendly and offers to team up with them. However, during the tournament, this so - called friend betrays them by using underhanded tactics. This could include things like secretly weakening Riolu before a battle or spreading false rumors about Ash to other trainers. As a result, Ash and Riolu not only lose the tournament but also feel deeply hurt and betrayed.